Process condition-based tuneable selective catalysis of hydroxymethylfurfural (HMF) hydrogenation reactions to aromatic, saturated cyclic and linear poly-functional alcohols over Ni–Ce/Al2O3

2021 ◽  
Author(s):  
Brett Pomeroy ◽  
M. Grilc ◽  
B. Likozar
Keyword(s):  
Transition Metal ◽  
Research Study ◽  
Process Condition ◽  
Metal Catalyst ◽  
Transition Metal Catalyst ◽  
Hydrogenation Reactions ◽  
Linear Poly ◽  
Selective Catalysis

The related immense versatility of a ceria-promoted transition metal catalyst, utilized for the hydrogenation of 5-hydroxymethylfurfural (HMF), is demonstrated in this research study.

Synthesis and catalysed hydroboration of styryl sulfonamides

2005 ◽  
Vol 83 (6-7) ◽  
pp. 661-667 ◽  
Author(s):  
Natalie A Wynberg ◽  
Lisa J Leger ◽  
Maren L Conrad ◽  
Christopher M Vogels ◽  
Andreas Decken ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Catalyst ◽  
Transition Metal Catalyst ◽  
Boronate Esters ◽  
Sulfonyl Chlorides ◽  
Hydrogenation Reactions ◽  
Judicious Choice ◽  
Selective Formation

We have prepared the aryl sulfonamides 4,4′-R-C6H4SO2NHC6H4CH=CH2 (R = CH3, 1a; NO2, 1b) by addition of 2 equiv. of 4-vinylaniline to the corresponding sulfonyl chlorides. The disulfonamides 4,4,4′-(R-C6H4SO2)2NC6H4CH=CH2 (R = CH3, 2a; NO2, 2b) were also prepared using 4-vinylaniline and 2 equiv. of the sulfonyl chlorides in the presence of DMAP. Although hydroborations of sulfanilamide derivatives 1 suffered from competing hydrogenation reactions, judicious choice of the transition metal catalyst gave selective formation of either the primary or secondary boronate esters in hydroborations of 2a.Key words: boronate esters, catalysed hydroborations, sulfanilamides, vinylaniline.

Postfunctionalized Porous Polymeric Aromatic Frameworks with an Organocatalyst and a Transition Metal Catalyst for Tandem Condensation–Hydrogenation Reactions

2016 ◽  
Vol 4 (3) ◽  
pp. 1078-1084 ◽  
Author(s):  
Ester Verde-Sesto ◽  
Estíbaliz Merino ◽  
Elizabeth Rangel-Rangel ◽  
Avelino Corma ◽  
Marta Iglesias ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Catalyst ◽  
Transition Metal Catalyst ◽  
Hydrogenation Reactions

COx-free hydrogen production via ammonia decomposition over mesoporous Co/Al2O3 catalysts with highly dispersed Co species synthesized by a facile method

2021 ◽  
Author(s):  
Yingqiu Gu ◽  
Di Xu ◽  
Yun Huang ◽  
Zhouyang Long ◽  
Guojian Chen
Keyword(s):  
Fuel Cells ◽  
Hydrogen Production ◽  
Transition Metal ◽  
Transition Metals ◽  
Ammonia Decomposition ◽  
Metal Catalyst ◽  
Facile Synthesis ◽  
Transition Metal Catalyst ◽  
Highly Dispersed ◽  
Free Hydrogen

Transition metals have been considered as potential catalysts for ammonia decomposition to produce COx-free hydrogen for fuel cells. However, the facile synthesis of transition metal catalyst with small size active...

scholarly journals Transition Metal Catalyst‐Free, Base‐Promoted 1,2‐Additions of Polyfluorophenylboronates to Aldehydes and Ketones

2021 ◽  
Author(s):  
Zhiqiang Liu ◽  
Goutam Kumar Kole ◽  
Yudha P. Budiman ◽  
Ya-Ming Tian ◽  
Alexandra Friedrich ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Catalyst ◽  
Free Base ◽  
Transition Metal Catalyst ◽  
Catalyst Free ◽  
Aldehydes And Ketones

Pyridine mediated transition-metal-free direct alkylation of anilines using alcohols via borrowing hydrogen conditions

2020 ◽  
Vol 56 (88) ◽  
pp. 13607-13610 ◽  
Author(s):  
Rajagopal Pothikumar ◽  
Venugopal T Bhat ◽  
Kayambu Namitharan
Keyword(s):  
Transition Metal ◽  
Traditional Approach ◽  
Metal Catalyst ◽  
Transition Metal Catalyst ◽  
Metal Free ◽  
Borrowing Hydrogen ◽  
Activation Of Alcohols ◽  
Catalyst Systems ◽  
Hydrogen Reactions

Herein, we report aza-aromatics based organic mediators as a readily accessible alternative to the traditional approach of using transition metal catalyst systems for the activation of alcohols in borrowing hydrogen reactions.

Copolymerization Studies of Vinyl Chloride and Vinyl Acetate with Ethylene Using a Transition-Metal Catalyst

2002 ◽  
Vol 124 (30) ◽  
pp. 8790-8791 ◽  
Author(s):  
Harold W. Boone ◽  
Phillip S. Athey ◽  
Michael J. Mullins ◽  
Dean Philipp ◽  
Richard Muller ◽  
...  
Keyword(s):  
Transition Metal ◽  
Vinyl Acetate ◽  
Vinyl Chloride ◽  
Metal Catalyst ◽  
Transition Metal Catalyst

scholarly journals Ferritin encapsulation of artificial metalloenzymes: engineering a tertiary coordination sphere for an artificial transfer hydrogenase

2018 ◽  
Vol 47 (32) ◽  
pp. 10837-10841 ◽  
Author(s):  
Martina Hestericová ◽  
Tillmann Heinisch ◽  
Markus Lenz ◽  
Thomas R. Ward
Keyword(s):  
Transition Metal ◽  
Coordination Sphere ◽  
Metal Catalyst ◽  
Transition Metal Catalyst ◽  
Artificial Metalloenzymes

Creating a tertiary coordination sphere around a transition metal catalyst incorporated within a protein affects its catalytic turnover and enantioselectivity.

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